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  <meta charset="UTF-8">
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  <title>Document</title>
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  <script>
    console.log(3 * 2)
    var a = 4
    var b = 10
    console.log(a * b)
    // 由于js是弱类型，所以最终结果就是2.5
    console.log(b/a) // 2.5
    console.log(b%a) // 2
    console.log(a%b) // 4

    // js里的+具有二义性
    console.log(3+5) // 数字加法运算

    console.log('hello' + ' world') // 字符串拼接

  </script>
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